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i have a program for windows that i use wine to run on linux mint, it is used to read and write too smart cards for cellphones, anyway it was working fine, I dont remember weather i installed any new programs since the last time i used this one, but now it does not give me a choice of com ports like it used to, although i only had 1 to choose from, now it says none are available and shows a zero. i am still new to linux, only been using for a year. how do i find out what is using the serial rs232 port that i need to run this app.

is it a db9 serial port or a usb port? You can use lsusb in the terminal to get a usb connected devices listing, or use statserial to probe serial ports. If you want to view data information on a serial port you can install gtkterm and run that from terminal to view more information. I've had communication issues with my embedded programmers that utilize an FTDI chip to convert USB to RS232. Still trying to figure it out myself. Hope this helps.

I did some looking around and could not find anything helpful. From what I understand gtkterm hasn't been updated since 2004. The program is fairly straight forward anyway. You can view information on the serial port (data transmitted and received). I'm going to look for an alternative since I am having the same problem. I'll post back when I make some progress.